Experts have said that smoking could be a sign of psychiatric illness.
They added that doctors should routinely consider referring people, who smoke to mental health services, in case they need treatment, the Independent reported.
The controversial recommendation from the charity British Lung Foundation has come in response to a major report, Smoking and Mental Health, published this week by the Royal College of Physicians and the Royal College of Psychiatrists with the Faculty of Public Health.
The report said that almost one in three cigarettes smoked in Britain now is smoked by someone who is suffering from a mental disorder.
The reason the report gave is that smoking rates have more than halved over the past 50 years, but the decline has not happened equally in all parts of society.